2.3L 4CY

2002 Ford Ranger



July, 17, 2007 AT 9:17 PM

I have a 2002 Ford Ranger, stick shift with about 115,300 miles. My check engine light is on giving a code of a P1432. I have went to several atuo part stores and the code looked out after each try.

One place says its the Secondary Intake Valve Open. Another place gave a list of what the code could mean:
Thermostat Heater Control Circuit Failure
Fuel Pressure Sensor Circuit Low
Fuel Level Sensor 2 Circuit low input

The oil have been changed on a regular, new air fliter, and even did a fuel injector cleanning. I have sprayed clean most of my sensors. The last few places told me to try a new pcv valve. Is there a second oxygen sensor on the truck near the catalytic converter?

But now can anybody lead me in the right direction for what to look for and check now.


1 Answer



July, 23, 2008 AT 2:09 PM

2002 Ford Ranger 2.3L 4cylinder p1432 code

I had this code too. The dealer charged me $130.00 to tell me it's the electronic thermostat and wanted $500.00 more to fix it. I located one on Ebay and put it on myself for about $110.00. After I got the new one installed the auto parts dude reset the check engine light and I am good to go. I inspected the old unit and sure enough the little tiny connectors on the wire plug looked fried and black. I had to remove a keeper clip to pull that wire connector out for inspection. So based on my experience if you're getting P 1432 code and a fried connector it may be time to replace the electrionic thermostat. Also of note is that I purchased a 2001 2.3 ranger thermostat. The folks that sold it said it's the same part so I trusted them and It's working well so far.

After closer inspection it looks like I broke the wires off a thermistor coming out of the thermo housing. It appears that the thermistor is imbedded in epoxy and it's fried to a crisp.




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